package com.itlong.cloud.utils.picture;

import com.google.zxing.*;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 * <desc>
 *      设备二维码生成
 * </desc>
 *
 * @createDate 2017/9/30
 */
public class QrcodeUtils {

    /**
     * <desc>
     * 给二维码图片添加Logo
     * <desc/>
     * @param   qrPic 二维码图片
     * @param   logoPic 背景图片
     * @param   targetFilePath  目标路径
     * @param   logoConfig  二维码相关配置
     * @author Biao.R
     * @createDate 2017/9/30
     */
    public static BufferedImage addLogo_QRCode(File qrPic, File logoPic, String targetFilePath, LogoConfig logoConfig) {
        try {
            if (!qrPic.isFile() || !logoPic.isFile()) {
                System.out.print("file not find !");
                System.exit(0);
            }

            /**
             * 读取二维码图片，并构建绘图对象
             */
            BufferedImage image = ImageIO.read(qrPic);
            Graphics2D g = image.createGraphics();

            /**
             * 读取Logo图片
             */
            BufferedImage logo = ImageIO.read(logoPic);
            /**
             * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
             */
            int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null),
                    heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null);

            // 计算图片放置位置
            /**
             * logo放在中心
             */
            int x = (image.getWidth() - widthLogo) / 2;
            int y = (image.getHeight() - heightLogo) / 2;
            /**
             * logo放在右下角
             */
            /*int x = (image.getWidth() - widthLogo);
            int y = (image.getHeight() - heightLogo);  */
            //开始绘制图片
            g.drawImage(logo, x, y, widthLogo, heightLogo, null);
            g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
            g.setStroke(new BasicStroke(logoConfig.getBorder()));
            g.setColor(logoConfig.getBorderColor());
            g.drawRect(x, y, widthLogo, heightLogo);

            g.dispose();
            logo.flush();
            image.flush();

            return image;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * <desc>
     *      给二维码图片添加Logo
     * </desc>
     *
     * @param image 二维码图片
     * @param logo logo图片
     * @param targetFilePath 目标路径
     * @param logoConfig 二维码相关配置
     * @return 处理之后的二维码BufferedImage对象
     * @author wangzhi
     * @createDate 2018/06/28
     */
    public static BufferedImage addLogo_QRCode(BufferedImage image, BufferedImage logo, String targetFilePath, LogoConfig logoConfig) {
        try {
            Graphics2D g = image.createGraphics();
            /**
             * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
             */
            int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null),
                    heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null);

            // 计算图片放置位置
            /**
             * logo放在中心
             */
            int x = (image.getWidth() - widthLogo) / 2;
            int y = (image.getHeight() - heightLogo) / 2;
            /**
             * logo放在右下角
             */
            /*int x = (image.getWidth() - widthLogo);
            int y = (image.getHeight() - heightLogo);  */
            //开始绘制图片
            g.drawImage(logo, x, y, widthLogo, heightLogo, null);
            g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
            g.setStroke(new BasicStroke(logoConfig.getBorder()));
            g.setColor(logoConfig.getBorderColor());
            g.drawRect(x, y, widthLogo, heightLogo);

            g.dispose();
            logo.flush();
            image.flush();

            return image;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

   /**
    * <desc>
    *      二维码解析
    * <desc/>
    * @param    file    二维码文件
    * @author Biao.R
    * @createDate 2017/9/30
    */
    public static void parseQR_CODEImage(File file) {
        try {
            MultiFormatReader formatReader = new MultiFormatReader();

            if (!file.exists()) {
                System.out.println("二维码文件不存在");
            }

            BufferedImage image = ImageIO.read(file);

            LuminanceSource source = new BufferedImageUtils(image);
            Binarizer binarizer = new HybridBinarizer(source);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);

            Map hints = new HashMap();
            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");

            Result result = formatReader.decode(binaryBitmap, hints);

            System.out.println("result = " + result.toString());
            System.out.println("resultFormat = " + result.getBarcodeFormat());
            System.out.println("resultText = " + result.getText());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

   /**
    * <desc>
    *     将二维码生成为文件
    * <desc/>
    * @param  file 生成的文件路径
    * @param  bm
    * @return
    * @author Biao.R
    * @createDate 2017/9/30
    */
   public static void decodeQR_CODE2ImageFile(BitMatrix bm, String imageFormat, File file) {
       try {
           if (null == file || file.getName().trim().isEmpty()) {
               throw new IllegalArgumentException("文件异常，或扩展名有问题！");
           }

           BufferedImage bi = fileToBufferedImage(bm);
           ImageIO.write(bi, "apng", file);
       } catch (Exception e) {
           e.printStackTrace();
       }
   }


    /**
     * <desc>
     *      构建初始化二维码
     * <desc/>
     * @param   bm
     * @return  BufferedImage  位图
     * @author Biao.R
     * @createDate 2017/9/30
     */
    public static BufferedImage fileToBufferedImage(BitMatrix bm) {
        BufferedImage image = null;
        try {
            int w = bm.getWidth(), h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

            for (int x = 0; x < w; x++) {
                for (int y = 0; y < h; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return image;
    }

    /**
     * 生成二维码bufferedImage图片
     *
     * @param content       编码内容
     * @param barcodeFormat 编码类型
     * @param width         图片宽度
     * @param height        图片高度
     * @param hints         设置参数
     * @return
     * @author Biao.R
     * @createDate 2017/9/30
     */
    public static BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints) {
        MultiFormatWriter multiFormatWriter = null;
        BitMatrix bm = null;
        BufferedImage image = null;
        try {
            multiFormatWriter = new MultiFormatWriter();

            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);

            int w = bm.getWidth();
            int h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

            // 开始利用二维码数据创建Bitmap图片，分别设为白（0xFFFFFFFF）黑（0xFF000000）两色
            for (int x = 0; x < w; x++) {
                for (int y = 0; y < h; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
                }
            }
        } catch (WriterException e) {
            e.printStackTrace();
        }
        return image;
    }

    /**
     * 设置二维码的格式参数
     *
     * @return
     * @author Biao.R
     * @createDate 2017/9/30
     */
    public static Map<EncodeHintType, Object> getDecodeHintType() {
        // 用于设置QR二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
        // 设置QR二维码的纠错级别（H为最高级别）具体级别信息
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        // 设置编码方式
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        hints.put(EncodeHintType.MARGIN, 0);
        hints.put(EncodeHintType.MAX_SIZE, 350);
        hints.put(EncodeHintType.MIN_SIZE, 100);
        return hints;
    }

    public static byte[] File2byte(File file) {
        byte[] buffer = null;
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(file);
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            byte[] b = new byte[1024];
            int n;
            while ((n = fis.read(b)) != -1) {
                bos.write(b, 0, n);
            }
            fis.close();
            bos.close();
            buffer = bos.toByteArray();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return buffer;
    }

}